Electronic shielding case with detachable shielding frame

Abstract

The utility model discloses an electronic shielding case with a detachable shielding frame, which comprises a shielding frame and a case body buckled on the shielding frame, the shielding frame is provided with a plurality of fixing devices, each fixing device comprises an elastic locking assembly and a fixing assembly used for being fixed on a PCB (Printed Circuit Board), and the elastic locking assemblies are clamped with the fixing assemblies. According to the technical scheme of the utility model, the shielding frame can be quickly detached, so that the electronic elements can be maintained and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding covers, in particular to an electronic shielding cover with a detachable shielding frame. Background Art

[0002] An electronic shielding cover is a device used to shield electromagnetic interference. It is usually made of metal materials. It can effectively reduce the impact of electromagnetic radiation and electromagnetic interference on electronic equipment and ensure the normal operation of electronic equipment. The principle is mainly to reduce the propagation of electromagnetic radiation through the absorption and reflection of electromagnetic waves by metal materials. It has a wide range of applications and can be used in various fields that need to prevent electromagnetic interference, such as communications, radar, navigation, medical electronics, etc.

[0003] In the related art, an electronic shielding cover generally includes a shielding frame and a shielding cover. The shielding frame is welded on the PCB board, and the shielding cover is buckled on the shielding frame. Therefore, when it is necessary to inspect the electronic components inside the shielding cover, the shielding frame can be easily removed. However, if it is necessary to replace the electronic components, since the chips and electronic components are located in the shielding frame, the space inside the shielding frame is relatively small, which will affect the staff's removal of the electronic components and make the operation inconvenient. Therefore, the shielding frame needs to be removed, and the shielding frame is welded on the PCB board, which makes it difficult to remove it, affecting the progress of maintenance. Utility Model Content

[0004] The main purpose of the utility model is to provide an electronic shielding cover with a detachable shielding frame, so that the shielding frame can be quickly disassembled so as to repair and replace electronic components.

[0005] To achieve the above-mentioned purpose, the utility model proposes an electronic shielding cover with a detachable shielding frame, comprising a shielding frame and a cover body snapped onto the shielding frame, the shielding frame being provided with a plurality of fixing devices, the fixing devices comprising an elastic locking assembly and a fixing assembly for fixing on a PCB board, the elastic locking assembly being snap-connected with the fixing assembly.

[0006] In an embodiment of the present invention, the shielding frame is provided with a plurality of installation cavities, the elastic locking components are installed in the installation cavities, and the fixing components are passed through the installation cavities and are clamped with the elastic locking components.

[0007] In one embodiment of the utility model, the elastic locking assembly includes a clamping member and an elastic member, the clamping member is movably installed in the installation cavity, two ends of the elastic member are respectively abutted against the inner wall of the installation cavity and the clamping member, and the clamping member is clamped with the fixing assembly.

[0008] In an embodiment of the present utility model, the clamping member includes a clamping portion and a release portion. The release portion is movably connected to the shielding frame, and the clamping portion is clamped with the fixing assembly.

[0009] In an embodiment of the present utility model, the fixing assembly includes a fixing pin. The fixing pin is provided with a clamping block, and the clamping portion is provided with a clamping groove. When the shielding frame is installed on the PCB board, the clamping block is embedded in the clamping groove.

[0010] In an embodiment of the present utility model, a release button is provided on the inner side wall of the installation cavity. The release button is inserted into the installation cavity and connected to the release portion.

[0011] The technical solution of the present utility model realizes the quick installation and disassembly of the shielding frame by clamping the elastic locking assembly installed on the shielding frame with the fixing assembly. The fixing assembly is fixed on the PCB board. When it is necessary to disassemble the shielding frame, the clamping state of the elastic locking assembly to the fixing assembly can be released to disassemble the shielding frame. When it is necessary to install the shielding frame on the PCB board, the fixing assembly is inserted into the elastic locking assembly, and the elastic assembly clamps the shielding frame. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0013] Figure 1 It is a schematic structural diagram of an embodiment of an electronic shielding cover with a detachable shielding frame of the present utility model;

[0014] Figure 2 For Figure 1 The partial enlarged view at A in;

[0015] Figure 3 It is a schematic structural diagram of an elastic locking assembly of an embodiment of an electronic shielding cover with a detachable shielding frame of the present utility model.

[0016] Explanation of the Reference Numerals in the Drawings:

[0017] 1. Cover body; 2. Shielding frame; 3. Elastic locking assembly; 4. Fixing assembly; 31. Elastic member; 32. Clamping member; 33. Release button; 34. Fixing pin; 321. Clamping portion; 322. Release portion; 323. Clamping groove; 41. Clamping block.

[0018] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] The utility model provides an electronic shielding cover with a detachable shielding frame.

[0021] In the embodiment of the utility model, a shielding frame 2 is a detachable electronic shielding cover, such as Figure 1 As shown, it includes a shielding frame 2 and a cover body 1 that is buckled on the shielding frame 2. The shielding frame 2 is symmetrically arranged with multiple fixing devices in the upper and lower left and right directions. The fixing devices can be arranged on the peripheral side of the shielding frame 2 or inside the shielding frame 2, wherein the fixing devices include an elastic locking component 3 and a fixing component 4 for fixing on a PCB board. The elastic locking component 3 includes two elastic sheets that are relatively arranged at the bottom of the shielding frame 2, and a clamping space is formed between the two elastic sheets. Clamping blocks 41 are respectively arranged on the opposite sides of the two elastic sheets. Support columns are embedded on the tops of the two elastic sheets. The support columns are larger at the top and smaller at the bottom and are arranged in an inverted eight-shaped shape. A pressure rod is connected to the top of the support column, and the pressure rod passes through the inner wall of the shielding frame 2 and is fixed on the inner side of the shielding frame 2. The wall is provided with a through hole for the pressure rod to slide downward, and the fixing component 4 includes a fixing pin 34, the bottom of the fixing pin 34 is welded on the PCB board, and a card slot is provided on one side of the fixing pin 34. When the shielding frame 2 is installed on the PCB board, the fixing pin 34 is inserted between the two elastic sheets and clamped with them. When the shielding frame 2 needs to be disassembled, the pressure rod is pressed downward, and the elastic sheet is stretched open under the action of the support column, thereby opening the clamping state of the clamping block 41 and the clamping slot 323, and the shielding frame 2 is pulled out upward. When the hand releases the pressure rod, the support column shrinks back to its original position under the action of the elastic potential energy of the elastic sheet, and the elastic locking component 3 installed on the shielding frame 2 is clamped with the fixing component 4 to achieve rapid installation and disassembly of the shielding frame 2.

[0022] Preferably, a plurality of installation cavities are provided in the shielding frame 2, the elastic locking assembly 3 is installed inside the installation cavity, and the fixing assembly 4 is passed through the installation cavity and clamped with the elastic locking assembly 3. The elastic locking assembly 3 can be composed of a clamping column and a pull rod. The clamping column is tubular, and the clamping column is rotatably connected to the bottom of the shielding frame 2. An L-shaped groove is provided inside the clamping column. One end of the pull rod is fixedly connected to the clamping column, and the other end passes through the inner side wall of the shielding frame 2. A through hole that allows the pull rod to swing left and right is provided on the inner side wall of the shielding frame 2. One side of the pull rod is also connected to a spring, and the other end of the spring abuts against the inner wall of the shielding frame 2. The fixing assembly 4 includes a fixing pin 34, which is fixed The bottom of the fixing pin 34 is welded on the PCB board, and a locking block is provided on the upper end of the fixing pin 34. When the shielding frame 2 is installed on the PCB board, the lever is moved to align one end of the L-shaped groove on the clamping column with the fixing pin 34, and then the locking block is embedded in the L-shaped groove and pushed to the bottom of the L-shaped groove. Then the lever is released, and the clamping column rotates to rotate the L-shaped groove, thereby locking the clamping block 41 in the L-shaped groove, thereby fixing the shielding frame 2 on the PCB board; when the shielding frame 2 needs to be removed from the PCB board, the lever is turned to rotate the clamping groove 323 on the clamping column to the released state, and then the shielding frame 2 is lifted to complete the disassembly, which is quick and convenient.

[0023] Optionally, the elastic locking assembly 3 includes a snap-in component 32 and an elastic component 31. The snap-in component 32 is movably installed in the installation cavity, and the two ends of the elastic component 31 are respectively abutted against the inner wall of the installation cavity and the snap-in component 32. The snap-in component 32 is snap-fitted with the fixing component 4. The snap-in component 32 can be pushed to release the snap-fitting state with the fixing component 4, thereby removing the shielding frame 2.

[0024] Furthermore, the clamping member 32 includes a clamping portion 321 and a releasing portion 322 . The releasing portion 322 is movably connected to the shielding frame 2 . The clamping portion 321 is clamped to the fixing component 4 . Pushing the releasing portion 322 can release the clamping state between the clamping portion 321 and the fixing component 4 .

[0025] Optionally, the fixing assembly 4 includes a fixing pin 34 , a clamping block 41 is provided on the fixing pin 34 , and a clamping portion 321 is provided with a clamping groove 323 . When the shielding frame 2 is mounted on the PCB board, the clamping block 41 is embedded in the clamping groove 323 .

[0026] Optionally, a release button 33 is provided on the inner side wall of the installation cavity, where the inner side wall is the side wall located in the electronic component installation space of the shielding frame 2, and the release button 33 is inserted into the installation cavity and connected to the release portion 322. By pressing the release button 33, the release portion 322 can be controlled to release the clamping state of the clamping portion 321, thereby removing the shielding frame 2.

[0027] Optionally, a plurality of raised bulges are provided on the peripheral side of the cover body 1, and a plurality of slots are provided on the outer peripheral side of the cover body 1. When the cover body 1 is buckled onto the shielding frame 2, the bulges are embedded in the slots to lock the cover body 1. The arrangement of the bulges and the slots can facilitate the removal of the cover body 1 from the shielding frame 2.

[0028] Optionally, a flange is provided on one side of the cover body 1 , and the flange is used to remove the cover body 1 . The flange can be pried upward with a tool without damaging the cover body 1 .

[0029] Optionally, the fixing pin 34 is made of metal material and is welded on the PCB board. While being used to fix the shielding frame 2 , it also serves to ground the shielding frame 2 .

[0030] Optionally, a plurality of heat dissipation holes are provided on the top of the cover body 1. Since the electronic components will generate heat during operation, if the heat is not dissipated in time, the temperature inside the cover body 1 will be too high, thereby causing the performance of the electronic components to decline. The heat dissipation holes can transfer the heat to the outside of the cover body 1 in time to reduce the temperature.

[0031] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An electronic shielding cover with a detachable shielding frame, comprising a shielding frame and a cover body buckled on the shielding frame, characterized in that: The shielding frame is provided with a plurality of fixing devices, and the fixing devices include an elastic locking component and a fixing component for fixing on a PCB board, and the elastic locking component is clamped with the fixing component.

2. The electronic shielding cover with a detachable shielding frame according to claim 1, characterized in that: The shielding frame is provided with a plurality of installation cavities, the elastic locking components are installed in the installation cavities, and the fixing components are passed through the installation cavities and clamped with the elastic locking components.

3. The electronic shielding cover with a detachable shielding frame according to claim 2, characterized in that: The elastic locking assembly includes a clamping member and an elastic member. The clamping member is movably installed in the installation cavity. Two ends of the elastic member are respectively in contact with the inner wall of the installation cavity and the clamping member. The clamping member is clamped with the fixing assembly.

4. The electronic shielding cover with a detachable shielding frame according to claim 3, characterized in that: The clamping member includes a clamping portion and a releasing portion, the releasing portion is movably connected to the shielding frame, and the clamping portion is clamped to the fixing assembly.

5. The electronic shielding cover with a detachable shielding frame according to claim 4, characterized in that: The fixing assembly comprises a fixing pin, the fixing pin is provided with a clamping block, the clamping portion is provided with a clamping groove, and when the shielding frame is mounted on the PCB board, the clamping block is embedded in the clamping groove.

6. The electronic shielding cover with a detachable shielding frame according to claim 4, characterized in that: A release button is provided on the inner side wall of the installation cavity, and the release button is inserted into the installation cavity and connected to the release portion.

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